3 Confirmatory tests
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Marine Environment Protection Committee - MEPC.1/Circular.677 – Guide to Diagnosing Contaminants in Oily Bilge Water to Maintain, Operate and Troubleshoot Bilge Water Treatment Systems – (22 July 2009) - Annex – A Guide to Diagnosing Contaminants in Oily Bilge Water to Maintain, Operate and Troubleshoot Bilge Water Treatment Systems - Annex 3 – Emulsions - 3 Confirmatory tests

3 Confirmatory tests

 If the decision tree indicates that there is an emulsion, draw a sample of effluent in a 25 ml graduated cylinder or other tall, narrow and clear cylindrical container, and let the sample set for one hour. After one hour, if there is no visible separation (oil or oil sheen forms at the top of the water column in the cylinder) then the emulsion is stable. It may be necessary to perform the other tests listed in the appendices to identify the cause(s) of the emulsions.

  • Sampling Instructions

    • Take a small container and draw bilge water before OWS. (To diagnose bilge water contamination.)

      Take a small container and draw bilge water at OWS outlet. (To diagnose OWS capability to handle contaminated bilge water.)

      Take a small container and draw bilge water after post-treatment polishing and particulate filters if installed. (To diagnose post-treatment capability to handle contaminated bilge water.)

Parent topic: Annex 3 – Emulsions
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